System Ui Tuner is an hidden menu that Google added in android Marshmallow. The System UI Tuner houses a ton of little options that can make your phone nicer to use. To use it, you’ll need to be on Android Marshmallow or higher.
How to activate System Ui Tuner on Android
- Pull down the notification shade on your phone, then open your Quick Settings menu.
- Tap and hold on the gear icon at the top of the screen for about five seconds. You’ll then see a message that says System UI Tuner has been added to Settings.
3. Open the Settings app on your phone and scroll to the bottom. There you’ll find System UI Tuner